12012211111101 has 4 divisors (see below), whose sum is σ = 16016281481472. Its totient is φ = 8008140740732.

The previous prime is 12012211111073. The next prime is 12012211111127. The reversal of 12012211111101 is 10111111221021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12012211111101 - 2¹⁴ = 12012211094717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012211111171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2002035185181 + ... + 2002035185186.

It is an arithmetic number, because the mean of its divisors is an integer number (4004070370368).

Almost surely, 2^{12012211111101} is an apocalyptic number.

It is an amenable number.

12012211111101 is a deficient number, since it is larger than the sum of its proper divisors (4004070370371).

12012211111101 is an equidigital number, since it uses as much as digits as its factorization.

12012211111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004070370370.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12012211111101 its reverse (10111111221021), we get a palindrome (22123322332122).

It can be divided in two parts, 120 and 12211111101, that added together give a palindrome (12211111221).

The spelling of 12012211111101 in words is "twelve trillion, twelve billion, two hundred eleven million, one hundred eleven thousand, one hundred one".